SUCCESSFUL EXECUTION OF A DYNAMIC DRILLER'S ROADMAP USING AN AUTOMATED FORMATION TOP DETECTION ALGORITHM

Efficient drilling through heterogenous geology requires careful matching of drilling parameters to the rock being drilled. Failure to do so can lead to increased bit damage or poor drilling performance. The "driller's roadmap" is a list of such parameters to be changed at various depths where formation tops are expected to be crossed. Successful execution of these roadmaps relies on having a detailed geological prognosis of where specific formations will be encountered. When drilling the first well on a pad, the precise depths of geological boundaries may be unknown preventing successful roadmap execution. By providing a feedback loop between a driller's roadmap and an automated formation top detection algorithm, it is possible to identify and proactively respond to geology even when drilling in these uncertain conditions.

A roadmap was created with target drilling parameters for each formation that would be encountered when drilling. Critical formations were identified where there was a high degree of interfacial severity, suggesting a high potential for bit damage if cutter overloading occurs. To mitigate this, a transition to controlled depth-of cut drilling would be made prior to formation entry. Gamma markers were identified for these formations, along with predictive gamma markers shallower than the transition zones. During drilling, an automated formation top detection algorithm was run on logging-while-drilling data providing a real-time alert when the predictive markers were detected. Remaining roadmap depths were updated based on whether these markers were shallower or deeper than the roadmap expectation. Gamma logs and drilling mechanics were monitored to confirm the depth where transition zones were encountered. This was repeated across the pad to confirm process reliability.

To learn more, visit us here: https://www.helmerichpayne.com/resources/technical-publications/successful-execution-of-a-dynamic-drillers-roadmap-using-an-automated-formation-top-detection-algorithm or reach out to us directly: https://www.helmerichpayne.com/contact.

Comments

Post a Comment

Popular posts from this blog

DrillScan® Digital Solutions PRESENTS Advanced Well Engineering - Tailored software for smarter, efficient, failure-proof drilling!

Image
  HOW WE HELP We accelerate well delivery and maximize well lifespan for energy operators through physics-based modeling and drilling expertise AWE offers constant performance improvement for the client by leveraging the extensive experience of our engineering team and DrillScan® digital solutions. BitScan™ Software for auto processing, validation & export of PDC models. WellScan ® Advanced suite for quick and accurate well engineering.   LiveScan™ & REST APIs Integrated real-time solution for drilling monitoring & optimization. WHO WE ARE A century of achievement. A reputation of excellence. We are a drilling engineering and R&D team renowned for pioneering the development and implementation of industry-leading physics-based models. DRILLSCAN DIGITAL SOLUTIONS Enhance drilling engineer performance with precise digital solutions. ADVANCED WELL ENGINEERING Premium engineering ...
Read more

MAGVAR™ OMNI TECHNOLOGY

Image
  Achieve Unmatched Accuracy MagVAR™ Omni technology elevates standard surveying practices by delivering more precise wellbore trajectory and shape. By integrating our survey correction services with continuous inclination measurements, it helps ensure exceptional accuracy in both lateral and vertical positioning. This enhanced mapping provides valuable insights into the trajectory and configuration of your well to help you reach your intended geological target with confidence. A comprehensive understanding of the wellbore trajectory and shape can: ·        Facilitate strong agreement between geologic & drilling teams ·        Minimize positional errors ·        Identify tortuosity ·        Improve wellbore quality ·        Improve Geology-Drilling data ·        Reduce costly re-drills ·  ...
Read more

DRILLSCAN® SOFTWARE IDENTIFIES DRILLING DYSFUNCTION CAUSES IN COMPLEX, MULTILATERAL ERD WELL

Image
An operator in the North Sea faced a lower completion lock-up 800m above total depth (TD), followed by a stuck pipe event in an ERD multi-lateral well. In an initial effort to push the completion down to TD, all slack off weight and torque margin were used. Since no improvement was observed, the decision was made to pull-out. However, the string remained stuck and despite the rig efforts to free it, the lower completion had to be cut and left in hole. H&P’s DrillScan® technology team performed an in-depth post-analysis, reviewing all available data to identify what might have caused the lock-up event. The data provided was used to simulate the downhole conditions undergone by the completion with the DrillScan genuine stiff-string model. The results and conclusions pointed to string dysfunctions: suboptimal tripping and lubricating/ backreaming practices (BHA POOH) led to repeatedly exceeding the screens yield strength (lower completion RIH). H&P’s DrillScan software was a...
Read more